The Defender Riding Helmet boast the perfect synergy between advanced technology and aesthetically pleasing design. With enough features to appeal those seeking everything a helmet could possibly offer OneK™ has the best of both worlds.

Available in two different helmet shapes

Round (regular): Is shaped for a head which has almost identical front-to-back and side-to-side measurements.
Long Oval: Is shaped for a head which is longer front-to-back (from forehead to the back of the skull) than it is side-to-side (ear to ear).

Features & Benefits:

Matte Polycarbonate with Advanced ABS Composite outer shell
Injection molded shell design
Washable quick-dry moisture wicking liner
Comfort padded harness with Fastex™ buckle
Synthetic suede lining adjustable with hook & loop
Multiple vents 1-Back, 2-Front, and 2-Center
Dual Certified: SEI ASTM F1163-23 and EN1384:2023

Size Chart

XSmall	51-52cm (6 3/8" - 6 1/2")	Large	57-58cm (7 1/8" - 7 1/4")
Small	53-54 cm (6 5/8" - 6 3/4")	XLarge	59-60cm (7 3/8" - 7 1/2")
Medium	55-56 cm (6 7/8" - 7")

THREE SHELLS MAKE UP ALL SIZES

The base shells for the Defender are Medium, Large, and XLarge.

Medium size helmet shell with a Small or XSmall liner to change the fit to a Small or XSmall.
Large size helmet shell with an XLarge liner to change the fit to an XLarge.
XLarge size helmet shell with an XXLarge liner to change the fit to XXLarge.

Disclaimer & Warning

All equestrian sports are inherently dangerous and involve the risk of serious injury or death. Riders using these products ride at their own risk with full knowledge of the hazards and risks associated with their activities. Helmets are designed for equestrian use only. Helmets cannot offer complete protection from injury or death to riders in case of fall, collision, impact, loss of control or otherwise. Helmets cannot protect areas of the head that are not covered. Helmets offer no protection against injuries involving forces other than impact.

CAUTION: Helmets must fit well and all retention straps must be securely fastened. Helmets are constructed so that the energy of an impact may be absorbed through partial destruction of the helmet. Helmets that suffer an impact should be destroyed and replaced. The protective qualities of helmets may be compromised by prior impact, age, use, and many common substances. Always follow the manufacturer's recommendations before applying cleaning agents, paints, or adhesives.

Equine Exchange LLC disclaims any responsibility for injuries or death incurred while wearing any of the helmets offered for sale. Representations regarding testing results, equipment ratings, product specifications, ASTM and/or SEI standards, and the adequacy of all such standards and designations are made solely by the product's manufacturer. Equine Exchange LLC does not warrant or confirm the representations of the manufacturers. Equine Exchange LLC makes no representations expressed or implied regarding the fitness of these products for any particular purpose nor the extent to which the products protect riders from injury or death. By purchasing any of the helmets offered for sale and using it in an equestrian sport, the purchaser AGREES FREELY AND VOLUNTARILY TO ASSUME ALL RISKS RELATED TO EQUESTRIAN SPORTS, including the risk of personal injury, damage, death or property damage. Further, to the maximum extent permitted by law, the purchaser does release Equine Exchange from any and all responsibility or legal liability related to the purchaser's participation in equestrian activities.

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OneK Defender Helmet